Journal
INORGANIC CHEMISTRY
Volume 53, Issue 2, Pages 682-684Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ic402513d
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Funding
- Australian Research Council [DP110102662]
- Japan Society for the Promotion of Sciences
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The magnetic structure and properties of sodium iron fluorophosphate Na2FePO4F (space group Pbcn), a cathode material for rechargeable batteries, were studied using magnetometry and neutron powder diffraction. The material, which can be described as a quasi-layered structure with zigzag Fe-octahedral chains, develops a long-range antiferromagnetic order below similar to 3.4 K. The magnetic structure is rationalized as a super-exchange-driven ferromagnetic ordering of chains running along the a-axis, coupled antiferromagnetically by super-super-exchange via phosphate groups along the c-axis, with ordering along the b-axis likely due to the contribution of dipole dipole interactions.
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